Ma capacitor amagwira ntchito yofunika kwambiri pamagetsi, makamaka omwe amagwiritsidwa ntchito kuyeretsa mphamvu yamagetsi yotulutsa ndikusefa phokoso lamagetsi. Mwa kusunga mphamvu yamagetsi kwakanthawi ndikuyitulutsa panthawi yomwe kufunikira kwa magetsi kukukwera, ma capacitor amathandizira kusunga mphamvu yotulutsa yokhazikika komanso yoyera. Ntchitoyi ndi yofunika kwambiri pochepetsa mphamvu ya kusinthasintha kwa magetsi ndi phokoso, zomwe zingasokoneze magwiridwe antchito ndi moyo wautali wa zida zamagetsi.
Kuphatikiza apo, ma capacitor omwe ali mumagetsi amathandizira kuyang'anira kusintha kwadzidzidzi kwa mphamvu yamagetsi. Chipangizo chikatenga mphamvu yochulukirapo, capacitor imapereka mphamvu yofunikira popanda kutsika kwakukulu kwa mphamvu yamagetsi, kuonetsetsa kuti mphamvu yamagetsi ikukhalabe yofanana. Mphamvu imeneyi ndi yofunika kwambiri pamagwiritsidwe ntchito komwe mphamvu yamagetsi yokhazikika ndi yofunika, monga zida zamawu zomwe zimakhudzidwa kapena ma digito enieni, kuwateteza ku kuwonongeka komwe kungachitike chifukwa cha kusagwira bwino ntchito kwa mphamvu.
Komanso, posintha magetsi, ma capacitor amathandizira kwambiri pakuwongolera ma frequency osinthira magetsi ndipo amathandizira pakusintha mphamvu. Ntchito yawo apa ndi iwiri: yoyamba, imachepetsa mphamvu zomwe zimatayika panthawi yosintha magetsi mwa kusunga mphamvu kwakanthawi, ndipo yachiwiri, imasintha mphamvu zomwe magetsi amatuluka kuti apewe kusokoneza kwa magetsi. Ntchito ziwirizi sizimangowonjezera magwiridwe antchito a magetsi komanso zimawonjezera magwiridwe antchito onse a chipangizo chomwe chimagwiritsa ntchito, kuonetsetsa kuti mphamvu zimagwiritsidwa ntchito bwino komanso moyenera.
Ma capacitor a electrolytic a aluminiyamu omwe akulephera kugwira ntchito akhoza kukhala ndi zotsatirapo zoyipa kwambiri pa ma circuit amagetsi. Akatswiri ambiri awona zizindikiro zosonyeza nkhani - kuphulika, kutulutsa kwa mankhwala, komanso ngakhale pamwamba zomwe zaphulika. Akalephera, ma circuit omwe ali nawo sagwiranso ntchito momwe adapangidwira - nthawi zambiri amakhudza magetsi. Mwachitsanzo, capacitor yomwe ikulephera kugwira ntchito ingakhudze kuchuluka kwa mphamvu ya DC ya DC chifukwa singathe kusefa bwino mphamvu ya DC yomwe yakonzedwa monga momwe idafunira. Izi zimapangitsa kuti mphamvu ya DC ikhale yotsika ndipo zimayambitsa khalidwe losakhazikika chifukwa cha kugwedezeka kosafunikira - mosiyana ndi mphamvu ya DC yoyera yomwe ikuyembekezeka pa katundu. Mwachitsanzo, pansipa pakuwonetsa mphamvu yamagetsi yathanzi. Monga mukuonera, mphamvu yotuluka (Green Line) ndi mphamvu ya DC yoyera yokhala ndi kugwedezeka kochepa kwambiri. Ripple ndi gawo la AC losafunikira lomwe capacitor ikufuna kusefa kapena (kusalala). Pamphepete lokwera la mafunde okonzedwa (mu utoto wofiirira), capacitor imayimba. Pamphepete logwa, mphamvu yosungidwa mu capacitor imapereka mphamvu yokwanira ku katundu kuti igwirizane nayo mpaka m'mphepete wotsatira wokwera.
Chitsanzo chotsatira chikuwonetsa magetsi omwewo ndi capacitor yotulutsa yolephera. Chifukwa chakuti ESR (Equivalent Series Resistance) ya capacitor yawonjezeka, dera silikugwiranso ntchito monga momwe linapangidwira. Izi zimapangitsa kuti zinthu ziwiri zichitike. Zili ngati kuti resistor yowonjezera yayikidwa motsatizana ndi capacitor. Komanso, malo a pamwamba pa ma capacitor plates achepa bwino - kuchepetsa capacitance. Chifukwa chake m'malo mosefera ripple yosafunikira ya AC, ripple imeneyo imawonekera pa gawo latsopano loletsa lomwe layambitsidwa mkati mwa capacitor yeniyeni komanso capacitance yochepetsedwa bwino. Izi zimapangitsa kuti voltage yotulutsa yodetsedwa (Green Line) ikhale ndi mulingo wocheperako wa DC womwe umafunika ku katundu. Chifukwa chake voltage yokonzedwa (yofiirira) ikakwera, capacitor imatha kusunga mphamvu zokwanira - kotero kuti pamphepete yotsika, voltage yotulutsa (yobiriwira) imatsika pang'onopang'ono.
Kusintha capacitor nthawi zambiri kumathetsa vutoli. Derali lingathe kugwiranso ntchito monga momwe linapangidwira - kusefa magetsi osafunikira a ripple ndikupereka magetsi oyera a DC ku katundu. Koma n’chifukwa chiyani ma caps awa amalephera? Kodi chingachitike n’chiyani kuti izi zisachitikenso? Kodi mungapewe bwanji izi kuti zisabwerezenso? Choyamba, ma capacitor a electrolytic amakhala ndi moyo wochepa. Ma capacitor ambiri a aluminiyamu electrolytic amatsimikizika kuti azitha kugwira ntchito maola 1000 - 10,000 pa kutentha kwawo kovomerezeka, kutengera mphamvu ndi magetsi. Pamagetsi omwe amagwira ntchito maola 24 pa sabata (monga omwe ali m'zida zomwe zimapatsa mphamvu ku batani la "pa"), izi zikutanthauza masiku 42 mpaka chaka chimodzi ndi theka. Moyo wonse umadaliranso ndi katundu womwe magetsi ali nawo, kutentha kozungulira capacitor (akhoza kukhala maola ambiri pamene kutentha kogwirira ntchito kumachepa), komanso nthawi yogwiritsira ntchito (momwe maola/tsiku lililonse magetsi amagwiritsidwira ntchito). Kutentha kwakukulu ndi chifukwa chimodzi chomwe ma capacitor a electrolytic ndi chimodzi mwa zinthu zomwe zimalephera kwambiri pa zamagetsi.
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Nthawi yotumizira: Disembala-26-2025